Observation may trip now and then without throwing you, for her gait is a walk; but inference always gallops, and if she stumbles, you are gone. Holmes.

Observation more than books, experience rather than persons, are the prime educators. A. B. Alcott.

Obstinacy and heat in argument are surest proofs of folly. Montaigne.

Obstinacy is ever most positive when it is most in the wrong. Mme. Necker.

Obstinacy is the result of the will's forcing 40 itself into the place of the intellect. Schopenhauer.

Obstinacy is the strength of the weak. Lavater.

Obstupui, steteruntque comæ, et vox faucibus hæsit—I was astounded; my hair stood on end, and my voice stuck fast in my throat. Virg.

Obtuseness is sometimes a virtue. Rivarol.

Occasio facit furem—Opportunity makes the thief. Pr.

Occasion reins the motions of the stirring 45 mind. Owen Feltham.